Following comments from billionaire investor Carl Icahn that he had taken a “large position” in Apple and discussed a larger buyback with Apple CEO Tim Cook, Apple’s stock experienced a new six-month high of over $488 per share. Today, AAPL continues to climb and has passed the $500 mark for the first time in nearly eight months since January 23rd.

“This is a no-brainer to go buy stock in a company that can go borrow” at a low rate, Mr. Icahn said in an interview. “Buy the company here and even without earnings growth, we think it ought to be worth $625,” he said, referring to the stock price, which closed Tuesday at $489.57, having risen 5% on the news of Mr. Icahn’s investment.

Mr. Icahn’s thesis rests on Apple borrowing at about a 3% interest rate and buying back shares right now, likely at around $525 a piece. A stock buyback can increase earnings per share by reducing the number of shares outstanding.

While Icahn didn’t provide any financial details, WSJ adds that sources say his stake in Apple is now worth over $1.5 billion. expand full story